contextual logging library, no patch, no logging module replacement
Project description
contextual logging library, no patch, no logging module replacement
features
structured logging
contextual logging (via logger.bind)
(no conflicts (stdlib’s logging module))
example
main.py
from monokaki import basic_config, get_logger
logger = get_logger(__name__)
def main():
log = logger.bind(name="foo")
log.info("hello")
log.debug("hmm..")
log.info("bye")
if __name__ == "__main__":
import logging
import argparse
parser = argparse.ArgumentParser()
parser.add_argument(
"--logging", choices=list(sorted(logging._nameToLevel.keys())), default="INFO"
)
args = parser.parse_args()
basic_config(level=logging._nameToLevel[args.logging])
main()
$ python examples/readme/main.py
{"level": "INFO", "msg": "hello", "name": "foo"}
{"level": "INFO", "msg": "bye", "name": "foo"}
$ python examples/readme/main.py --logging=DEBUG
{"level": "INFO", "msg": "hello", "name": "foo"}
{"level": "DEBUG", "msg": "hmm..", "name": "foo"}
{"level": "INFO", "msg": "bye", "name": "foo"}
output customization
renderer.py
import json
from collections import OrderedDict
def ordered_json_render(data, record, formatter):
kwargs = OrderedDict()
kwargs["time"] = formatter.formatTime(record)
kwargs["level"] = record.levelname
kwargs["meg"] = record.msg
kwargs["caller"] = "{}:{}".format(record.pathname, record.lineno)
kwargs["source"] = record.name
if "stack" in data:
kwargs["stack"] = data["stack"]
kwargs.update(record.kwargs)
return json.dumps(kwargs, indent=2)
main.py
from monokaki import get_logger, basic_config
logger = get_logger(__name__)
def main():
logger.bind(name="foo").info("hello", age=20)
logger.bind(name="foo").info("bye", age=21)
if __name__ == "__main__":
import logging
from renderer import ordered_json_render
basic_config(level=logging.INFO, renderer=ordered_json_render)
main()
$ python examples/customize-renderer/main.py
{
"time": "2017-05-21 15:48:49,121",
"level": "INFO",
"meg": "hello",
"caller": "examples/customize-renderer/main.py:6",
"source": "__main__",
"age": 20,
"name": "foo"
}
{
"time": "2017-05-21 15:48:49,121",
"level": "INFO",
"meg": "bye",
"caller": "examples/customize-renderer/main.py:7",
"source": "__main__",
"age": 21,
"name": "foo"
}
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